Watch Information: Case Material: Stainless Steel Case Size: 43 mm Band Material: Leather Glass Material: Sapphire Glass Clasp: Standard Buckle Water Resistant: 100 m Movement: Eco Drive (Recharged by any light source, noneed to change battery) Power Reserve: 8 Months -Perfex -Regular Automatic Reception Function -5 Bands Global Radio Controlled Watch -World Time in 26 Cities -Perpetual Calendar -Alarm -24 Hours Display -Day and Date Display -Insufficient Charge Warning Function -Overcharge Prevention Function